Devil Dog Ultras

DEC
5
2026
Looped trail ultramarathon in Prince William Forest Park offering 50K, 100K, and 100 mile options with stocked aid stations and set time limits.
Sat 5 Dec 2026
100 miles 100 kilometers 50 kilometers

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Devil Dog Ultras

Devil Dog Ultras is a trail running event held Dec 5 and 6, 2026 in Triangle, VA at Prince William Forest Park (Cabin Camp 5). The event offers multiple looped distances and limits entry to 300 runners.

Distances

  • 100 mile
  • 100K
  • 50K

The course is a looped layout that is primarily single-track with occasional roots, rocks, and brief technical sections. There are sections of fire road and rolling hills but no substantial climbs. The first loop for all races is 23 miles; subsequent loops are 19.5 miles for the 100 mile and 100K. The 100K completes three loops and the 100 mile completes five. The 50K completes one loop plus an additional 9 mile loop. The course will be well marked.

Each loop includes three staffed aid stations at Camp Remi (start/finish), Camp Gunny, and Camp Toofy, plus three unmanned resupply points (RP Alpha, Bravo, Charlie) that provide water only. Crew access is allowed only at Camp Remi and Camp Toofy; there is no crew access at Camp Gunny or the resupply points. Aid stations provide hot food options and general runner support.

Time limits are 10 hours for the 50K, 20 hours for the 100K, and 32 hours for the 100 mile. Entry details include a Jan 1, 2026 registration opening, a Nov 27, 2026 registration close or until races fill, and a 300 runner cap. The 100 mile requires completion of a 50 mile race within the prior two years; there is no entry requirement for the 100K. Refunds and deferrals are not offered; bib transfers are permitted under conditions, carry a $20 transfer fee, and must be completed by Nov 5.

Bunkhouse lodging at Camp Remi will offer 75 beds for registered runners on a first come, first served basis for a total of $30 for Friday and Saturday nights. Vehicles for bunkhouse occupants will be parked in a remote lot about one mile from the start with shuttle service provided Friday evening and post race.

The Devil Dog Dynasty Challenge awards commemorative items for completing specified distances in consecutive years. Previous years count toward the challenge. Visit the organization's website for the most recent information.

Events nearby

Trail races at Hemlock Overlook in Clifton VA on November 15 2026, with 5.2 mile and 9.5 mile options on riverfront hiking trails and park facilities.
Thanksgiving morning 5k and 10k at Burke Lake Park with chip timing, finisher medal, long sleeve shirt, virtual option, and series points supporting Paws for Purple Hearts.
Trail 5k, 10k and half at Burke Lake Park on November 28 with an ugly sweater theme, chip timing, virtual option, and proceeds benefiting Paws for Purple Hearts.
Trail races at Fountainhead Regional Park on December 6, 2026 offer 4.8 mile and 10.5 mile courses with aid stations, porta-johns, race swag, and a supervised kids program.
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